0
Why would a plant be put in the dark before doing an experiment for photosynthesis?
Wiki User
∙ 12y ago
so that it cannot make any nutrients/energy from photosynthesis (because there is no light), therefore all its nutrients are used up before the experiment begins....so it is a reliable test (nutrients made by photosynthesis before experiment would cause unreliable results because it wouldn't give proof that light is needed for photosynthesis to occur)
Wiki User
∙ 12y ago
Rajeshkanna Rajesh k...
Wiki User
∙ 11y agoI am guessing so that it uses the starch that it has so that when the starch test (experiment) is carried out later, you can be sure that the starch is being made currently.
Wiki User
∙ 12y agoplants respire faster when they are in dark and speed of respiration is slow in day light
Wiki User
∙ 10y agoBecause there isn't any sun in the dark room...
Wiki User
∙ 7y agoGlucose formation take place efficiently in dark. This does not need light.
Add your answer:
Earn +20 pts
Why is it so important to control variables in an experiment?
You need to control variables in an experiment so as to make sure that only the variable you are testing and changing is the one affecting the results of your experiment. For example, in an experiment to find the effect of light intensity on the rate of photosynthesis of plant, you'll change light by putting a plant in sun and another in dark but you must not change carbon dioxide level for both plants so by that you have controlled other variables in the experiment(variables which must be the same always in the experiment).
What is a control of a science experiment?
For instance, if you wanted to experiment on plant a, plant b, and plant c. You would put plant c to one side, treat it like a normal plant (water, feed, etc.) and call that the control. You could then experiment on plant a and plant b - feeding them differing fertilisers, allowing pests to attack the plants, and so on. At the end of the experiment, you could compare the growth of plant a and plant b to the control plant c. Though plants are mentioned above, the principle relates to any experiment - you need a control to compare against the end results of the experiment.
The blank variable is the part of the experiment that is affected by the independent variable?
The independent variable is the part of the experiment that is being tested or the part that is changed by the person doing the experiment. The dependent variable is the part of the experiment that is affected by the independent variable.
Why is the Bulb of the onion plant so big?
It is big because before leaves sprout, the bulb is the source of food because without leaves, there is no photosynthesis thus no food unless the bulb feeds the plant (which as I said before, it does). The bulb of the onion also stores energy. Hope this satisfies!
Why Scientist redo their experiment?
In an experiment, there are many variables (things that can't be controlled). For an accurate result, experiments must be done many times over to so that a pattern can be seen, giving scientists an idea of what the result is. For example, if you tested how music affected plant growth, and tested it once, if the plant died because of other causes, it could seem like the music affected the plant. By doing the experiment many times and seeing no affect on the majority of the plants, the scientists would see that music has no affect on plant growth. Scientists redoing experiments is to ensure that the results are credible.
Why to destarch a plant?
a leaf (plant) should be destarched before photosynthesis investigations because the starch already present in the plant may mislead the result . hence if a destarched plant is used for the experiment then the amount of starch present at the time of the experiment will be nil and affter the experiment is compleded the amount of starch present in the leaves woul give the rate of photodynthesis as starch id prepared during photosynthesis
What is the control in an experiment to demonstrate osmosis?
If you are doing the experiment with potato or similar (other plant tissue) then you boil the potato you are taking the sample from before you use it, to shoe that the plant tissue needs to be alive for the experiment to work.
Why is it necessary to place a plant in dark before starting a experiment on photosynthesis?
Glucose formation take place efficiently in dark. This does not need light.
Why is dilute sodium hydrogen carbonate solution used in a beaker when doing an experiment to find out about photosynthesis?
sodium hydrogen carbonate provides carbon dioxide for the plant to photosynthesise
What photosynthesis occurs in a plant?
it is the chloroplasts. They are doing it better.
What are plant producers capable of doing because of their additional parts?
They can perform photosynthesis.
Do blueberries do photosynthesis?
Yes they do it. blueberry is a green plant. So it is doing that.
A plant must light energy before it can be used for photosynthesis?
absorb
What part of plant cell is needed for photosynthesis to happen?
Chloroplasts, which are organelles only found in plant cells
What is a plant that does not use its leaves for photosynthesis?
No plant does not photosynthesis
What does chloroplasts do for leaves?
Chloroplasts are the powerhouse of a plant cell. They convert the energy, water, and carbon dioxide into food for the plant and oxygen for us.
How does vitamin B6 affect plant growth?
After doing a science experiment it showed to make the plant grow a little bit faster
